@misc{indiciaebcdec65baf24,
  title = {Preliminary geologic map of the Glen Ullin quadrangle, Morton County, North Dakota},
  author = {C.S. Venable Barclay},
  year = {1970},
  doi = {10.3133/ofr7017},
  url = {https://pubs.usgs.gov/publication/ofr7017},
  note = {Source identifier: ofr7017}
}